<?php

/**
 * @copyright  For copyright and license information, read the COPYING.txt file.
 * @link       /COPYING.txt
 * @license    Open Software License (OSL 3.0)
 * @package    Mage_Eav
 */

/**
 * Entity attribute option resource model
 *
 * @package    Mage_Eav
 */
class Mage_Eav_Model_Resource_Entity_Attribute_Option extends Mage_Core_Model_Resource_Db_Abstract
{
    protected function _construct()
    {
        $this->_init('eav/attribute_option', 'option_id');
    }

    /**
     * Add Join with option value for collection select
     *
     * @param Mage_Eav_Model_Entity_Collection_Abstract $collection
     * @param Mage_Eav_Model_Entity_Attribute $attribute
     * @param Zend_Db_Expr $valueExpr
     * @return $this
     */
    public function addOptionValueToCollection($collection, $attribute, $valueExpr)
    {
        $adapter        = $this->_getReadAdapter();
        $attributeCode  = $attribute->getAttributeCode();
        $optionTable1   = $attributeCode . '_option_value_t1';
        $optionTable2   = $attributeCode . '_option_value_t2';
        $tableJoinCond1 = "{$optionTable1}.option_id={$valueExpr} AND {$optionTable1}.store_id=0"
        ;
        $tableJoinCond2 = $adapter->quoteInto(
            "{$optionTable2}.option_id={$valueExpr} AND {$optionTable2}.store_id=?",
            $collection->getStoreId(),
        );
        $valueExpr      = $adapter->getCheckSql(
            "{$optionTable2}.value_id IS NULL",
            "{$optionTable1}.value",
            "{$optionTable2}.value",
        );

        $collection->getSelect()
            ->joinLeft(
                [$optionTable1 => $this->getTable('eav/attribute_option_value')],
                $tableJoinCond1,
                [],
            )
            ->joinLeft(
                [$optionTable2 => $this->getTable('eav/attribute_option_value')],
                $tableJoinCond2,
                [$attributeCode => $valueExpr],
            );

        return $this;
    }

    /**
     * Retrieve Select for update Flat data
     *
     * @param int $store
     * @param bool $hasValueField flag which require option value
     * @return Varien_Db_Select
     */
    public function getFlatUpdateSelect(
        Mage_Eav_Model_Entity_Attribute_Abstract $attribute,
        $store,
        $hasValueField = true
    ) {
        $adapter        = $this->_getReadAdapter();
        $attributeTable = $attribute->getBackend()->getTable();
        $attributeCode  = $attribute->getAttributeCode();

        $joinConditionTemplate = '%s.entity_id = %s.entity_id'
            . ' AND %s.entity_type_id = ' . $attribute->getEntityTypeId()
            . ' AND %s.attribute_id = ' . $attribute->getId()
            . ' AND %s.store_id = %d';
        $joinCondition = sprintf(
            $joinConditionTemplate,
            'e',
            't1',
            't1',
            't1',
            't1',
            Mage_Core_Model_App::ADMIN_STORE_ID,
        );
        if ($attribute->getFlatAddChildData()) {
            $joinCondition .= ' AND e.child_id = t1.entity_id';
        }

        $valueExpr = $adapter->getCheckSql('t2.value_id > 0', 't2.value', 't1.value');
        $select = $adapter->select()
            ->joinLeft(['t1' => $attributeTable], $joinCondition, [])
            ->joinLeft(
                ['t2' => $attributeTable],
                sprintf($joinConditionTemplate, 'e', 't2', 't2', 't2', 't2', $store),
                [$attributeCode => $valueExpr],
            );

        if (($attribute->getFrontend()->getInputType() != 'multiselect') && $hasValueField) {
            $valueIdExpr = $adapter->getCheckSql('to2.value_id > 0', 'to2.value', 'to1.value');
            $select
                ->joinLeft(
                    ['to1' => $this->getTable('eav/attribute_option_value')],
                    "to1.option_id = {$valueExpr} AND to1.store_id = 0",
                    [],
                )
                ->joinLeft(
                    ['to2' => $this->getTable('eav/attribute_option_value')],
                    $adapter->quoteInto("to2.option_id = {$valueExpr} AND to2.store_id = ?", $store),
                    [$attributeCode . '_value' => $valueIdExpr],
                );
        }

        if ($attribute->getFlatAddChildData()) {
            $select->where('e.is_child = ?', 0);
        }

        return $select;
    }
}
